Amalgamator



Patented Mar. 5, 1929. y

unirse STATE-s 1,704,010 vP ArENr oF-Fics.

irnavu o. 'iviAivomaAMiis A. Baoivimiv, AunJoHN z. BRoMLnY, or WASHINGTON,

QlEENNSYLYANIA. 'i

AMALGAMATOR.

Application filed June l1, 1928. n Serial No. 284,600.

The invention relates to amalgainators for use by dentists primarily, and it is one object of said invention to provide a very-siniple, inexpensive, durable and eilicient con struction which is actuated by compressed air, for the purpose oi vibrating a capsule or the like containingl theingredients tofbe mixed. i

Another-object oi the' invention is to provide a unique holder for the capsule or other container. n

lVith the foregoing in view, theinvention resides in the knovel subject matterliereinafter described and claimed, description boing accompli-shed by reference to lthe accompanying drawing,

Figs. 1 and 2 are vertical sectional views partly in elevation showing the reciprocatory plunger and the capsule holdei carried thereby, in their lowered and raised positions respectively. n

Fig. 3 is a horizontal section on line 3--3 of Fig. 1.

The drawing above briei'ly described illustrates the preferred form of construction and while this construction will be herein specifically explained, itis to be understood that withinthe scope of the invention vas claimed, variations may be made.

The numeral 5 on the drawingdenotes a body whichcomprises a flat-bottomed, preterably circular base 6 to rest on a laboratory table, shell. or other desired support, and a post 7 integral with andrising from the center of said base. The post and base are jointly -formed with a vertical bore8 whoselower end is closed by a screw plug 9, while its upper end 10is reduced and opens through the upper end of said post. A plunger 11 is slidably mounted in the I bore 8 and embodies a reduced rod portion 12 passing slidably through the reduced end 10' of said bore, the upper end of said rod portion being provided with a holder 13 for a capsule or the like 14, to contain the ingredients to be mixed. The plunger 11 and the body 5 are provided with co-acting means for utilizing compressed air or other fluid under pressure, to eiliect vertical reciprocation of said plunger to similarly reciprocate the capsule holder .13. Preferably, these co-acting means are of the character now to be described.

Body 5 is formed with' an inlet port 15 `for compressed air or other fluid under pressure,

one end oitsaid port being threaded at16 for.l

conneetion'with an air supply hose or' pipo, while the othery end 17 oilisaid port opens into the bore S, centrally between the'ends of the latter. An upper port 18 leads from a point somewhatabove the port end y17, into the upper end of the bore y3, and a lower port 19 leads :trom a point somewhat below/said portend 17, vto the lower end of said bore 8. Near its :upper end, this bore is provided withaii eX- liaust port 20 and a similar port 21 is located near the lower end of said bore. The Vbody portionoii the plunger 11fis reduced centrally as denoted at 22, so that whenfthe plunger is in the position of Fig. 1, the :duid `under pressure from the port 15 may pass around this reduced portion 22and through'the port 19, into the space under said plunger, thus forcing the latter upwardly tothe position of Fig): 2. During ascent of the plunger, any

fluid above it, is exhausted through the port 20, i By the time the'plunger reaches the position disclosedinFig.-2, the spacearound its reduced portion 22, places the ports 15-18 in communication, so that the fluid pressure then enters the bore above the plungerf to again drive the latter downwardly, fluid from lil) the lower portionoll the borebeing then er liau'sted through the port'21. It will thus be seen that by using thecompressed air already 'accessible in the dentists glaboratory, the

aiiialgamator maybe rapidly operated. The

device isv yefficientv and" produces quick results, and it possesses practically no parts to get ,foutlof order andcause trouble.` yAs the iiiovenient of the plungelr11 is strictly vertical, v'it Vhas practically no tendei'icy to cause wear between itselff andthe bore, anddaiiger of .battering `the ends ofthe bore or the ends oi the plungerbody, is prevented, dueto the factthat an air cushion is formed `in each end or' the bore to yieldably check the moveinent of the plunger. l' y s In'tlie preferred construction herein disclosed, a metal sleeve 23 is threaded upon the upper end of the rod portion `12, the upper end of said sleeve being provided with a head 24s having a socket 25 at itsupper end to receive thelower en'dloff the capsule 14. A C- shapcd strip 26 of spring metal is formed` with an yoyiening 27 in `its lower end, receiving the sleeve 23, and saidlower end of the strip is clamped against the head 24,`by a collar 2S. This collar surrounds the sleeve 23' and the lower end of the latter is upset to secure the collar.y and spring infplace. A second head contacts with the lower side of the upper end of the spring 26, the lower side of said head being formed with a socket 31 cooperable with the socket 25 in holding the capsule or the like 14. Head 3() is provided with an upstanding stud 34 which passes through an opening 33 in the upper end of the strip 26,l

- the latter in place while it is being vibrated by the reciprocatory plunger.

Attention is invited to the following characteristics of the device :-The base 6 is thick and heavy and projects horizontally in all directions from the post 7 to prevent tilting of said base and post under the influence of gravity, without the necessity of fastening the base to the laboratory table or the like upon which it is used, permitting it to be moved from one place to another as may be most convenient. The plunger body 11 is 0f considerably more than halfl the length of the bore 8 so that when it is raised as seen in Fig. 2, it does not materially raise the center of mass and consequently has no tendency to cause the base and the post to tilt. Then too, the connection 16 for the compressed air hose, is disposed in the base 6 so that the hose may rest upon the laboratory table or the like in such position that its weight will have no tendency to cause the entire device to tip over. Furthermore, the weight of the post and the base are such that they will not be vibrated by reciprocation-of the plunger and consequently the entire device will not creep upon the supporting surface. Attention is further invited to the fact that the post`7 and the base 6 are jointly formed with the bore 8. This permits the use of the advantageous vertically elongated plunger Wit-houtl lthe necessity of extending the post so high as to possibly cause the structure to become topheavy with the plunger body in its raised position. Then too, the plunger body l1 is of much less diameter than the post 7, so that the mass of the stationary part of the amalgamator cannot be vibr'ated by reciprocation of the comparatively light plunger.

It will be seen from the foregoing that a very simple, eliicient, durable and generally desirable device has been provided, and while the details disclosed are preferred as above stated, `attention is again invited to the fact that within the scope of the invention as claimed, variations may be made.

le claim 1. In a. dent-al amalgamator, a short vertical post, a thick heavy base joined rigidly to the lower end of said post and projecting horizontally in all directions therefrom to anchor said post against tilting when the base rests upon and is free rof attachment to a supporting surface, said base and post jointly having a plunger-receiving bore which eX- tends substantially to and is closed at the bottom of said base but is open at the upper end of said post, a plunger body slidable in said bore and of much less diameter than said post, said body being of considerably more than half the length of said. bere, whereby in its raised position, the body will not materially raise the center of mass with danger of causing tilting of the base and post, and a stein rising from said plunger Abody and projecting above the post., said stein being provided with a capsule holder, said base and post being provided with portage for compressed air to reciprocate the plunger, said portage having a connection for an air supply hose, said connection being disposed at said base whereby the hose will have no tendency to tilt the base and post.

2. In an amalgamator, a shaker rod, a sleeve threaded on one end of said rod and having ahead at its outer end, the outer side of lsaid head being formed with a socket, a C-shaped spring metal strip having an opening in one end receiving said sleeve, a collar on the sleeve between which and said head said one end of said spring is clamped, the inner end of the sleeve being upset to hold said collar in place, Vand a second head secured to the other end of the spring and formed .with a socket opening toward the first named socket. l y

Intestimony whereof we have hereunto affixed 'our signatures.

HERVE o. MANoN. JAMES A. BRoMLnY. JOHN z. inoMLEr. 

